Nippon Storm Study design

Abstract

An understanding of the clinical aspects of electrical storm (E‐storms) in patients with implantable cardiac shock devices (ICSDs: ICDs or cardiac resynchronization therapy with defibrillator [CRT‐D]) may provide important information for clinical management of patients with ICSDs. The Nippon Storm Study was organized by the Japanese Heart Rhythm Society (JHRS) and Japanese Society of Electrocardiology and was designed to prospectively collect a variety of data from patients with ICSDs, with a focus on the incidence of E‐storms and clinical conditions for the occurrence of an E‐storm. Forty main ICSD centers in Japan are participating in the present study. From 2002, the JHRS began to collect ICSD patient data using website registration (termed Japanese cardiac defibrillator therapy registration, or JCDTR). This investigation aims to collect data on and investigate the general parameters of patients with ICSDs, such as clinical backgrounds of the patients, purposes of implantation, complications during the implantation procedure, and incidence of appropriate and inappropriate therapies from the ICSD. The Nippon Storm Study was planned as a sub‐study of the JCDTR with focus on E‐storms. We aim to achieve registration of more than 1000 ICSD patients and complete follow‐up data collection, with the assumption of a 5–10% incidence of E‐storms during the 2‐year follow‐up.

Appropriate Duration of Driving Restrictions After Inappropriate Therapy From Implantable Cardiac Shock Devices

“…7 Briefly, patient registration was conducted from 48 Japanese ICSD centers (Appendix), using a web site registration (JCDTR: Japanese cardiac defibrillator therapy registration). The clinical background of the eligible patients was collected.…”

Significant impact of electrical storm on mortality in patients with structural heart disease and an implantable cardiac defibrillator

“…The Nippon Storm Study was a prospective observational study designed to recruit clinical data from patients on ICD therapy [14,15] to investigate the incidence and the clinical characteristics of patients who develop E-Storm in Japan where DCM is relatively common compared to other Western countries.…”

A Decision Tree-Based Survival Analysis of Patients with a History of Inappropriate Implantable Cardioverter-Defibrillator Therapy

“…The study protocol has been presented elsewhere. 4) This retrospective, observational, nonrandomized study was conducted at 50 institutions, including 2 prospective ICD studies 15,16) (the participants are listed in the Supplemental Text). All patients were implanted with ICDs or administered cardiac resynchronization therapy with defibrillators (CRT-D) for the primary or secondary prevention of sudden death in accordance with the international guidelines for ICD implantation.…”